Patent US2780107A successfully refreshed from Google Patents.
US2780107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing drive
Assignee: COPAR Inc
•
Filing: 1954-04-09
•
Granted: 1957-02-05
•
Expires: 1974-04-09
Abstract
No abstract record available.
Inventors
- 👤 Richard A Sorrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
F; F16; F16H; F16H3/00; F16H2712/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US725414A
Cited
US783037A
Cited
US968521A
Cited
US1007957A
Cited
US1091338A
Cited
US1072165A
Cited
US2046429A
Cited
US2457821A
Cited
US2535254A
Cited
US2602341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |